import VueRouter from 'vue-router'
import Vue from 'vue'
import Login from '../components/Login'
import Home from '../components/Home'

Vue.use(VueRouter)

const routes = [
    {
        path: '/',
        redirect: '/login'
    },
    {
        path: '/login',
        component: Login
    },
    {
        path: '/home',
        component: Home
    }
]

const router = new VueRouter({
    routes
})

//挂载路由导航守卫
router.beforeEach((to, from, next) => {
    //to 将要访问的路径
    //from 代表从哪个路径跳转而来
    //next 是一个函数，表示放行
    // next() 放行    next('/login') 强制跳转

    if(to.path === '/login') return next();
    //获取token
    const tokenStr = window.sessionStorage.getItem('token');
    if(!tokenStr) return next('/login')
    next()
})

export default router
